Trying to figure out how best to handle converting my MKV files into M4V files for playback on my Apple TV, iOS devices, and in iTunes on my Mac. Dealing with the video track seems easy enough... I just open an MKV file in Subler, then after clicking "Add", I highlight the video track and change the current profile to Main @ 3.1 to ensure that the remuxed file will play nice with whatever I'm trying to watch it on. The issue of audio tracks isn't quite as easy for me to figure out. The following blog post has the answer I am looking for, I'm just having a hard time interpreting some of the things the author si trying to get across: http://www.iphonelife.com/blog/87/c...scs-andor-mkvs-ipad-iphone-%E2%80%93-part-iii Let me start out by saying that I am using Mountain Lion, I do have Perian installed, and I have followed the instructions in the blog post to install the The Mountain Lion - compatible A52Codec.component (timestamp of Jul 27, 2012.) My goal is to have every MKV file I run through Subler be compatible with my AppleTV 3, my iPad 3, and my iPhone 5. "Convert AC3 Audio to AAC" checkbox in Preferences > Audio is checked (which I believe is necessary if I want to playback my remuxed files on iOS devices. In the preferences, what should I have the default settings be for "Downmix audio to:" configured for? For MKV files with multiple audio tracks, I think I am supposed to convert (remux?) DTS audio tracks into AAC - Dolby Pro Logic II, and for any Ac-3 audio tracks I am supposed to set the 'Action' to AAC - Stereo to ensure playback on iOS devices... is this correct? What am I supposed to do if the MKV file I am trying to remux only has one DTS audio track? Forgive my ignorance about all of this. I'm clearly not on the same level as all of you guys, but I'd still like to know how to deal with this scenario so I can use this tool to enjoy my MKV files in the Apple ecosystem. If possible, please keep your answers simple and straightforward. I just need to know the 'HOW', and not so much the 'WHY'... if you know what I mean. Thanks so much!